Association of mitochondrial DNA haplogroups with exceptional longevity in a Chinese population.

PLoS One · 2009 · PMC2713402 · PMID 19641616

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a decreasing trendno p-value reported

However, although a decreasing trend of N9 haplogroups was still observed from middle-aged subjects (8.6%), elderly (7.1%) and EL subjects (5.3%) in female samples, the statistical significance originally observed in all subjects diminished, which may be due to lack of statistic power ( Table 3 ).

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